參數(shù)資料
型號(hào)： AK4140
廠商： Asahi Kasei Microsystems Co.,Ltd
英文描述： Digital BTSC Decoder
中文描述： 數(shù)字BTSC解碼器
文件頁(yè)數(shù)： 28/43頁(yè)
文件大?。?/td> 538K
代理商： AK4140
ASAHI KASEI
[AK4140]
Soft Mute Operation (default = Mute)
When the SMUTE bit goes to “1”, the output signal is attenuated from 0dB to -
∞
dB during 768 LRCK cycles. When the
SMUTE bit returns to “0”, the mute is cancelled and the attenuation gradually changes to 0dB during 768 LRCK cycles.
If the soft mute is cancelled before attenuating to -
∞
, the attenuation is discontinued and returns to 0dB. This return takes
the same number of clock cycles as the point at which the soft mute cancel was initiated, i.e. if 500 clock cycles passed
and then a soft mute cancel was issued, it will take 500 clock cycles to return to 0dB. The soft mute is used primarily when
changing the signal source.
SMUTE
0dB
Attenuation Level
at SDTO
-
∞
dB
(1)
(2)
(1)
Notes:
(1)
Transition time. 768 LRCK cycles (768/fs).
(2)
If the soft mute is cancelled before attenuating to -
∞
after starting the operation, the attenuation is discontinued
and returned to 0dB by the same number of clock cycles.
Figure 13. Soft Mute
MS0547-E-01
2007/03
- 28 -
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